Die truck



June 6, 1939. B. G. JOHNSON 2,161,578

' DIE TRUCK I Filed Nov. 5, 1957 2 Shets-Sheet 1 INVENTOR. .Bernara 6'.Johnson W A ORNEY.

June 6, 1939. B. G. JOHNSON 2,161,578

DIE TRUCK Filed Nov. 5, 1957 2 Sheets-Sheet 2 INVENTOK firnard 17060500Patented June 6, 1939 UNITED STATES PATENT OFFICE 2,161,578 DIE TRUCKBernard G. Johnson, Brookfield, Ill.

Application November 5, 1937, Serial No. 172,978

1 Claim.

Among the objects of my invention is to create a die truck having anoverhead construction for separating, rotating and assembling heavyleader pin die sets; to create a die truck having an ad- While I haveshown in the accompanying drawings a preferred embodiment of myinvention, yet I wish it understood that the same is susceptible ofmodification and change without departing from the spirit of myinvention.

Referring to the drawings, Figs. 1 and 2 are perspective views ofpreferred embodiments of my invention; Fig. 3 is a perspective view ofmy die showing the top table in lowered position, and Fig. 4 is aperspective view showing the use of parallel bars on cross members H.

The embodiment selected to illustrate my invention comprises a truck Illhaving a plurality of casters ll, preferably four, attached by suitablemeans such as rivets or electric welding adjacent each of the fourcorners of a base l2.

A frame l3 preferably consists of a plurality of upright portions I4,the lower ends of which are attached by electric welding or the like, tothe upper face of the base l2 adjacent each of the corners thereof. Theupright members I4 extend upwardly beyond an intermediate table I 5 tosubstantially the normal level of a top table It. A cross member I!extends between each of the upright portions H at the ends of the truckas shown in Fig. 1. Each pair of members l4 on opposite ends of thetruck continues upwardly and inwardly as converging portions l8 meetingat their top portions to form a support for bearing 40. An overheadshaft l9 extends between and is supported by oppositely disposedbearings 40.

A plurality of spaced tubes 2| have their lower ends welded to'the topsurface of base l2 and their upper ends welded to the intermediate table15.

A plurality of spaced screws 22 have their upper ends attached to theunder side of top table It and extend downwardly to intermediate tablel5 when in normal position. Each screw 22 is surrounded by a worm wheel23. Operable on each of said worm wheels is a worm gear 24. A handle 25is turnable to operate the worm gears and worm wheels through shafts 25and chain and sprockets 21.

Upon operation of the handle 25 the top table 5 It may be lowered towardthe intermediate table 5, and raisedas desired.. .Upontthelowering ofthe top table i 6 the screws 22 pass through openings 4| in theintermediate table I5 into tubes 2| and, if the top table It is loweredsufllciently, the screws 22 will descend through tubes 2| and openings42 in base l2. Table I5 does not overlie crosspieces I! but merelyextends nearly to crosspieces Therefore table 16 can be raised andlowered and is adjustable. 15

A pair of spools 29 are slidably mounted on overhead'shaft I9. To eachof said spools 29 is attached at its inner end a chain, cable or lengthof suitable material 30. To the outer end of each chain 30 is attached ayoke 3| having a substantially centrally located aperture 32 in itsbottom portion 33. Through said aperture 32 extends a screw threaded eyebolt 24 having an adjusting nut 35. Integral with and extending from theeye bolt 34 we loop or hook IS.

A pair of removable clamping members 31 each are formed with asubstantially U-shaped body portion 28 and substantially at right anglesthere-' to..a knob 39. At the top 43 of the body portion fit-isalt'hreaded aperture 44 into which screws a 30 set screw 45.

Adjacent the outer side of one of the bearings 40 a worm wheel 46 issuitably attached to the overhead shaft IS. A wormgear 41 is positionedto actuate said worm wheel 46 upon movement of shaft 48 by operation ofhandle 49.

My die truck is particularly useful wherever heavy die sets are to beseparated or assembled. Heretofore it was necessary to employ severalmen. With my die truck the top table may be adjusted to the properheight of the place from which the die set is to be removed, so that thetransfer to the truck may be accomplished with a minimum of efi'ort andat considerable speed.

If it is desired to lift the punch holder the clamping members 2'! arepositioned on either side of by one worker on both punch holder and dieThe punch holder may also be rotated. 50

shoe at the same time with the use of a single die truck.

Cross members II are adapted to receive parallel bars, upon which theuser may place a desired object such as a punch holder for examinationand work.

Another embodiment of my invention shown in Fig. 2 omits theintermediate table l5 and its raising and lowering mechanism, but isotherwise substantially the same die truck as shown in Fig. 1.

Having thus described my invention, I claim:

In a portable table construction a fixed bottom table, a plurality ofspaced tubes having their lower ends attached to the upper surface ofsaid bottom table, a fixed intermediate table, the upper ends of saidspaced tubes attached to the under surface of said intermediate tableand supporting said intermediate table in spaced relation to said bottomtable, a movable top table, a plurality of spaced screws having theirupper ends attached to the under surface of said top table, said screwsextending downwardly to-said intermediate table when the top table isnormally spaced from said intermediate table, a worm wheel surroundingand attached to each of said screws, a worm gear positioned to contacteach of said worm wheels, means for operating said worm gears and inturn said worm wheels for raising and lowering said screws, said screwspositioned so that when said screws are lowered said screws enter saidspaced tubes so that said top table may be lowered with relation to thefixed intermediate table, a frame having a plurality of uprights withtheir lower ends attached to the upper surface of said lower tableadjacent the corners thereof, said uprights extending vertically beyondthe intermediate table to substantially the normal level of the toptable and cross members attached to each pair of uprights at the upperends thereof so that when the table is below normal level, the crossmembers may hold objects placed thereacross.

BERNARD G. JOHNSON.

